Chemistry Multiple Choice Questions

Chemistry Multiple Choice Questions The smallest particle of a compound that retains the chemical properties of the compound is a(n) ? - CORRECT ANSWER-molecule Which of these elements is a nonmetal: Aluminum, Sulfur, Calcium, Lead, Sodium - CORRECT ANSWER-Sulfur Which of the following elements is a member of the Halogen Family: Calcium, Bromine, Cobalt, Gold, Cesium - CORRECT ANSWER-Bromine When a pure solid was heated a student obtained another solid and a gas. Each of which was a pure substance. From this info which of the following statements is ALWAYS a correct conclusion? The original solid is a compound and the gas is an element The original solid is an element and the gas is a compound Both products are compounds The original Solid is not an element Both Products are Elements - CORRECT ANSWER-The original solid is not an element Which of the following is an example of chemical change? Water Boiling, Ice Melting, Natural Gas Burning, Iodine Vaporizing, Dry Ice Subliming - CORRECT ANSWER-Natural Gas Burning What is the law of multiple proportions? - CORRECT ANSWER-two elements can form multiple compounds in different ratios Which of the following is predicted to be insoluble in water? NaBr, PbCl2, K2S, (NH4)2S - CORRECT ANSWER-PbCl2 Iron (II) Sulfate (Formula) - CORRECT ANSWER-FeSO4 NaClO2 (Compound Name) - CORRECT ANSWER-Sodium Chlorite Ammonium Thiosulfate (Formula) - CORRECT ANSWER-(NH4)2S2O3 Co(NO3)3 (Compound Name) - CORRECT ANSWER-Coblat III nitrate Sodium Bicarbonate (Formula) - CORRECT ANSWER-NaHCO3 Ionic Compound - CORRECT ANSWER-A compound that consists of positive (Cation) and negative ions (Anion) (example ammonium NH4+) Molecular Compound - CORRECT ANSWER-A compound composed of molecules (Example: H2O) Oxidation-reduction reaction - CORRECT ANSWER-a reaction that involves the transfer of electrons between reactants A rigid steel tank containg Oxygen gas is heated slightly. As it is heated the density of the gas ? - CORRECT ANSWER-stays the same A sample of gas has a volume of 160 ml at STP what volume does the gas occupy if the temperature and pressure are both halved? - CORRECT ANSWER-160 ml Specific Heat Capacity is ? - CORRECT ANSWER-the amount of energy needed to change 1 gram of substance by 1 Kelvin